Can't tell if HTC One V is GSM or CDMA@EGHDK Remove the back cover on the chin. Under the "Made in China" sticker, there should be a small box which should mention something like HTC One V T320e What does your's say?

Android battery usage (3G, HSDPA and Edge)I read all of this on Wikipedia. Frankly, it will take more than a few reading to get your head around it. I dont mean any disrespect. Atleast, it still took me a few reading to get a simple grasp of the technologies.